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Summary of Other Assets (Detail) (USD $) In Thousands, unless otherwise specified | Jun. 30, 2014 | Dec. 31, 2013
--- | --- | ---
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Line Items] |  |
Margin receivable | $ 58,455 | $ 31,149
Investment receivable | 3,142 | 8,923
Other pledged collateral | 5,000 | 5,000
REO | 3,323 | 3,661
Prepaid expenses | 1,576 | 1,850
Fixed assets and leasehold improvements | 1,754 | 1,232
Income tax receivables | 2,902 | 170
Other | 1,612 | 1,655
Total Other Assets | $ 77,764 | $ 53,640

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